sreda, 5. junij 2013

mobil phone

                                                                     MOBILE  PHONE



mobile phone is a device that can make and receivetelephone calls over a radio link while moving around a wide geographic area. It does so by connecting to a cellular networkprovided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station.





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